lean_workbook_plus_23158
ProvedProve that for all .
Preamble
import Mathlib.Analysis.Complex.Basic
Formal statement
theorem lean_workbook_plus_23158 (f : ℝ → ℝ) (hf: f = fun x => if x < 0 then x else f x) : ∀ x < 0, f x = x := by sorry
Source
Prove that for all .
import Mathlib.Analysis.Complex.Basic
theorem lean_workbook_plus_23158 (f : ℝ → ℝ) (hf: f = fun x => if x < 0 then x else f x) : ∀ x < 0, f x = x := by sorry